All the visas have changed since I lived and worked in Chiang Mai for 3 years. I had a non immigrant b and still needed to leave the country to get my work permit extended yearly and repot to immigration every 90 days. I was wanting to come back when I turn 60 and build up my Thai language skills and was looking at a student visa. Have you compared the student and Dtv visa? If so what are the advantages of the dtv visa?